document.write( "Question 30050: Please help with my homework problem #49. Add or subtract as indicated. \r
\n" ); document.write( "\n" ); document.write( "(3x^3 + 2x^2 +8x) + (x^3 - 5x^2 + 7)\r
\n" ); document.write( "\n" ); document.write( "Thank you so much.\r
\n" ); document.write( "\n" ); document.write( "Pam
\n" ); document.write( "

Algebra.Com's Answer #16785 by sdmmadam@yahoo.com(530)\"\" \"About 
You can put this solution on YOUR website!
(3x^3 + 2x^2 +8x) + (x^3 - 5x^2 + 7)
\n" ); document.write( "=(3x^3 + x^3)+ (2x^2 - 5x^2)+8x + 7 (grouping like terms which is nothing but repeated additive commutativity and associativity)
\n" ); document.write( "=4x^3-3x^2+8x+7
\n" ); document.write( "
\n" ); document.write( "
\n" );